Gap between cab and bed

[Zebb]

Can anyone tell me what the gap is supposed to be between the cab and the bed on an 86 fleetside?
I have been assembling the truck for the last test fit before I finish the body work after a frame off rebuild. I want to make sure the cab and radiator support are adjusted right and tightened before I pull the sheet metal off.

This is what I got to work with. New frame 2wd converted to 4wd, new cab rebuilt and painted, different bed, radiator support fenders and doors are off my old truck.


Thanks,
Zebb